Resistor Networks
CASTalk.com Forum Index CASTalk.com
Discussion of DSP, FPGA, storage and embedded system.
 
 FAQFAQ   MemberlistMemberlist     RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 
 
Google
 
Web castalk.com
Resistor Networks

 
Post new topic   Reply to topic    CASTalk.com Forum Index -> Embedded System
Author Message
RichH
Guest
Posted: Wed Dec 29, 2004 1:13 am    Post subject: Resistor Networks Reply with quote
Quick question... For resistor networks, what is the
difference between "bussed" and "common"?

Cheers,
Rich
Back to top
mc
Guest
Posted: Wed Dec 29, 2004 1:30 am    Post subject: Re: Resistor Networks Reply with quote
Quote:
Quick question... For resistor networks, what is the
difference between "bussed" and "common"?

I think the latter means all the resistors are tied together at one end.
Back to top
Joerg
Guest
Posted: Wed Dec 29, 2004 2:53 am    Post subject: Re: Resistor Networks Reply with quote
Hi Rich,

Quote:
Quick question... For resistor networks, what is the
difference between "bussed" and "common"?



All I have come across so far is the 'bussed' type that connects one
side of each resistor to a 'common' bus. Usually used for pull-up or
pull-down.

Then there are the Thevenin versions that have two resistors for each
terminal plus two common rails, one for VCC and one for GND. I guess you
could call these 'bussed' as well.

Regards, Joerg

http://www.analogconsultants.com
Back to top
Steve at fivetrees
Guest
Posted: Wed Dec 29, 2004 4:58 am    Post subject: Re: Resistor Networks Reply with quote
"Joerg" <notthisjoergsch@removethispacbell.net> wrote in message
news:eBkAd.3498$wZ2.719@newssvr13.news.prodigy.com...
Quote:
Hi Rich,

Quick question... For resistor networks, what is the
difference between "bussed" and "common"?



All I have come across so far is the 'bussed' type that connects one
side of each resistor to a 'common' bus. Usually used for pull-up or
pull-down.

Then there are the Thevenin versions that have two resistors for each
terminal plus two common rails, one for VCC and one for GND. I guess you
could call these 'bussed' as well.

Then there are the "individual resistor" versions, typically used to provide
some series resistance in a bus. These could also be considered to be
"bussed"!

Confusing terminology, or what?

Steve
http://www.fivetrees.com
Back to top
Joerg
Guest
Posted: Wed Dec 29, 2004 5:24 am    Post subject: Re: Resistor Networks Reply with quote
Hi Steve,

Quote:
Then there are the "individual resistor" versions, typically used to provide
some series resistance in a bus. These could also be considered to be
"bussed"!

Confusing terminology, or what?



It can be confusing since not all manufacturers are using the same
terminology. Individual resistor arrays are usually not called bussed
though. Besides series resistance they offer another great advantage:
While the absolute tolerance may be a percent or more the differential
tolerance between resistors on the same array is often much lower,
fractions of a percent. That is a boon to the analog or mixed signal
designer as well as in some uC applications. It allows precise divison
of reference voltages, signals etc. Sometimes these arrays can also be
handy in slope conversion schemes.

Regards, Joerg

http://www.analogconsultants.com
Back to top
RichH
Guest
Posted: Wed Dec 29, 2004 7:39 am    Post subject: Re: Resistor Networks Reply with quote
Joerg,

That was my confusion. They looked the same... Some of the products
at Jameco say "bussed" and some say "common", but they look identical.

Thanks for your help.

Cheers,
Rich


In article <eBkAd.3498$wZ2.719@newssvr13.news.prodigy.com>,
notthisjoergsch@removethispacbell.net says...
Quote:
Hi Rich,

Quick question... For resistor networks, what is the
difference between "bussed" and "common"?



All I have come across so far is the 'bussed' type that connects one
side of each resistor to a 'common' bus. Usually used for pull-up or
pull-down.

Then there are the Thevenin versions that have two resistors for each
terminal plus two common rails, one for VCC and one for GND. I guess you
could call these 'bussed' as well.

Regards, Joerg

http://www.analogconsultants.com
Back to top
Peter Bennett
Guest
Posted: Wed Dec 29, 2004 7:50 am    Post subject: Re: Resistor Networks Reply with quote
On Tue, 28 Dec 2004 14:13:29 -0600, RichH
<rich_NOSPAM_@_NOSPAM_holmteam.net> wrote:

Quote:

Quick question... For resistor networks, what is the
difference between "bussed" and "common"?

Cheers,
Rich

I would think nothing - but you should look at the manufacturers'
wiring diagrams to be sure.



--
Peter Bennett, VE7CEI
peterbb4 (at) interchange.ubc.ca
new newsgroup users info : http://vancouver-webpages.com/nnq
GPS and NMEA info: http://vancouver-webpages.com/peter
Vancouver Power Squadron: http://vancouver.powersquadron.ca
Back to top
RichH
Guest
Posted: Wed Dec 29, 2004 7:58 am    Post subject: Re: Resistor Networks Reply with quote
I did... they looked the same. Just wasn't sure of the terminology.

Cheers,
Rich



In article <0q64t0plipg0a9ieaqudg1j2un1jsju08h@news.supernews.com>,
peterbb@somewhere.invalid says...
Quote:
On Tue, 28 Dec 2004 14:13:29 -0600, RichH
rich_NOSPAM_@_NOSPAM_holmteam.net> wrote:


Quick question... For resistor networks, what is the
difference between "bussed" and "common"?

Cheers,
Rich

I would think nothing - but you should look at the manufacturers'
wiring diagrams to be sure.



Back to top
 
Post new topic   Reply to topic    CASTalk.com Forum Index -> Embedded System All times are GMT
Page 1 of 1

 
 You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum




VoIP Electronics Powered by phpBB